Buick Skylark 1997 2.4L DOHC Workshop Manual

buick :: Buick Skylark L4-144 2.4L DOHC VIN T
SFI (1997)

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Alarm Module, (Vehicle Antitheft) > Component Information > Locations

LH I/P Near Steering Column

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Emergency Contact Module > Component Information > Technical Service Bulletins > OnStar(R) - Analog Only Systems Information

Emergency Contact Module: Technical Service BulletinsOnStar(R) - Analog Only Systems Information

INFORMATION
Bulletin No.: 06-08-64-007A
Date: September 22, 2008

Subject: Information on OnStar(R) Analog-Only Systems

Models
Supercede:

This bulletin is being revised to update the models affected list above. Please discard Corporate Bulletin Number 06-08-46-007 (Section 08 - Body &Accessories).

Vehicles with this equipment will no longer be able to receive OnStar(R) services beginning January 1, 2008. At that time, service will be available onlythrough Dual-Mode (Analog / Digital) equipment. Analog-Only vehicles cannot be upgraded to digital equipment.

Disclaimer

All vehicles equipped with OnStar(R) listed in this bulletin were built with Analog-Only OnStar(R) Hardware. OnStar(R) equipped vehicles withanalog-only equipment were designed to operate only on the analog wireless network and cannot be upgraded for digital network compatibility.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Emergency Contact Module > Component Information > Technical Service Bulletins > OnStar(R) - Analog Only Systems Information >

Page 11

Emergency Contact Module: Technical Service BulletinsOnStar(R) - Aftermarket Device Interference Information

INFORMATION
Bulletin No.: 08-08-46-004
Date: August 14, 2008

Subject: Information on Aftermarket Device Interference with OnStar(R) Diagnostic Services

Models:2009 and Prior GM Passenger Car and Truck (including Saturn)2009 and Prior HUMMER H2, H3 Models2009 and Prior Saab 9-7X
with OnStar(R) (RPO UE1)

This bulletin is being issued to provide dealer service personnel with information regarding aftermarket devices connected to the Diagnostic LinkConnector (DLC) and the impact to OnStar(R) diagnostic probes and Vehicle Diagnostic e-mails.

Certain aftermarket devices, when connected to the Diagnostic Link Connector, such as, but not limited to, Scan Tools, Trip Computers, Fuel EconomyAnalyzers and Insurance Tracking Devices, interfere with OnStar's ability to perform a diagnostic probe when requested (via a blue button call) by asubscriber. These devices also prohibit the ability to gather diagnostic and tire pressure data for a subscriber's scheduled OnStar(R) Vehicle Diagnostic(OVD) e-mail.

These aftermarket devices utilize the Vehicles serial data bus to perform data requests and/or information gathering. When these devices are requestingdata, OnStar(R) is designed not to interfere with any data request being made by these devices as required by OBD II regulations.

The OnStar(R) advisor is unable to definitively detect the presence of these devices and will only be able to inform the caller or requester of theunsuccessful or incomplete probe and may in some cases refer the subscriber/requester to take the vehicle to a dealer for diagnosis of the concern.

When performing a diagnostic check for an unsuccessful or incomplete OnStar(R) diagnostic probe, or for concerns regarding completeness of theOnStar(R) Vehicle Diagnostic (OVD) e-mail, verify that an aftermarket device was not present at the time of the requested probe. Regarding the OVDe-mail, if an aftermarket device is interfering (including a Scan Tool of any type), the e-mail will consistently display a "yellow" indication in diagnosticssection for all vehicle systems except the OnStar(R) System and Tire Pressure data (not available on all vehicles) will not be displayed (i.e. section iscollapsed). Successful diagnostic probes and complete OVD e-mails will resume following the removal or disconnecting of the off-board device.

Disclaimer

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Emergency Contact Module > Component Information > Technical Service Bulletins > OnStar(R) - Analog Only Systems Information >

Page 12

Emergency Contact Module: Technical Service BulletinsOnStar - Analog-Only Systems Information

Bulletin No.: 06-08-46-007
Date: December 13, 2006
INFORMATION

Subject:Information on OnStar(R) Analog-Only Systems

Models:1996-2001 GM Passenger Cars and Trucks

Plus:2002 Buick LeSabre, Rendezvous2002-2003 Buick Century, Regal2002-2005 Buick Park Avenue2002 Cadillac Eldorado, Escalade Models2002 Chevrolet Avalanche, Silverado, Suburban, Tahoe, Venture2002 GMC Denali, Denali XL, Jimmy, Sierra, Yukon, Yukon XL2002 Oldsmobile Intrigue, Silhouette2002-2003 Oldsmobile Aurora2002 Pontiac Aztek, Bonneville, Montana2002-2003 Pontiac Grand Prix
with OnStar(R) (RPO UE1)

All vehicles equipped with OnStar(R) listed in this bulletin were built with Analog-Only OnStar(R) Hardware. OnStar(R) equipped vehicles withanalog-only equipment were designed to operate only on the analog wireless network and cannot be upgraded for digital network compatibility.

Vehicles with this equipment will no longer be able to receive OnStar(R) services beginning January 1, 2008. At that time, service will be available onlythrough Dual-Mode (Analog/Digital) equipment. Analog-Only vehicles cannot be upgraded to digital equipment.

Disclaimer

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Module > Component Information > Description and Operation

Keyless Entry Module: Description and Operation

Module Mounting And Wiring (Typical)

The Remote Keyless Entry Module (receiver) is located in the luggage compartment on the left inner wheel house panel. The following information is onthe module:

^ BCM Part Number
^ Latest Change Level
^ Julian Date Code (4 digits)
^ Manufacturing Location

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Module > Component Information > Service and Repair > Reprogramming Transmitter/Module

Keyless Entry Module: Service and RepairReprogramming Transmitter/Module

Module Mounting And Wiring (Typical)

All Remote Keyless Entry Modules (receivers) may be programmed to receive four different transmitters which all may be used to operate the remotecontrol lock system on the vehicle. Also, several vehicles, each with the same system may all be programmed to operate from the same transmitter orfour different transmitters.

During the programming of the Remote Keyless Entry Module, feedback is provided by the receiver by cycling the door locks. To program a RemoteKeyless Entry Module (receiver):

1. Turn ignition off.2. Ground the program pin.
^

Within , Lock, Unlock and Trunk will cycle to indicate module ready for programming.1 second

3. Press and hold the Lock and Unlock buttons until:
^ Lock, Unlock, Trunk, and Horn cycles to indicate the transmitter has successfully been programmed.
^

No more than .12 seconds

4. Repeat step 3 for the remaining transmitters.5. Remove the ground from the program pin.6. Verify proper operation of the transmitters.

Do not leave the door lock key (oval head) in the vehicle while programming the Remote Keyless entry Module. This will avoid unintentional lock out ifthe programming procedure is not properly performed.

All vehicles with the Remote Keyless Entry option will have the Remote Keyless End Module "matched" to the transmitter at the assembly plant. Theabove procedure is used by service to replace lost transmitters or to program a second transmitter.

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Keyless Entry Module > Component Information > Service and Repair > Reprogramming Transmitter/Module > Page 18

Keyless Entry Module: Service and RepairKeyless Entry Module

Module Mounting And Wiring (Typical)

REMOVE OR DISCONNECT

1. Negative battery cable.2. Open rear compartment.3. Left inner trim panel.4. One electrical connector.5. Remove push pins.6. Module.

INSTALL OR CONNECT

1. Module to rear compartment brace.2. Push pins to brace.3. Electrical connector.4. Rear compartment trim.5. Close rear compartment.6. Negative battery cable.7. Program to match transmitter(s).

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > Customer Interest for Relay Module: > 09-06-03-004D

Relay Module: Customer InterestElectrical - MIL ON/DTC's Set By Various Control Modules
TECHNICAL

09-06-03-004DBulletin No.:

December 08, 2010Date:

Subject:

Intermittent No Crank/No Start, No Module Communication, MIL, Warning Lights, Vehicle Messages or DTCs Set by Various ControlModules - Diagnosing and Repairing Fretting Corrosion (Disconnect Affected Connector and Apply Dielectric Lubricant)

Models:

2011 and Prior GM Passenger Cars and Trucks

Attention:

This repair can be applied to ANY electrical connection including, but not limited to: lighting, body electrical, in-line connections, powertrain controlsensors, etc. DO NOT over apply lubricant to the point where it prevents the full engagement of sealed connectors. A light coating on the terminalsurfaces is sufficient to correct the condition.

Supercede:This bulletin is being revised to update the Attention statement and add the 2011 model year. Please discard Corporate Bulletin Number 09-06-03-004C(Section 06 - Engine/Propulsion System).

Condition

Some customers may comment on any of the following conditions:

- An intermittent no crank/no start

- Intermittent malfunction indicator lamp (MIL) illumination

- Intermittent service lamp illumination

- Intermittent service message(s) being displayed

The technician may determine that he is unable to duplicate the intermittent condition.

Cause

- Vibration

- Thermal cycling

- Poor connection/terminal retention

- Micro motion

- A connector, component or wiring harness not properly secured resulting in movement

On low current signal circuits this condition may cause high resistance, resulting in intermittent connections.
On high current power circuits this condition may cause permanent increases in the resistance and may cause a device to become inoperative.

Representative List of Control Modules and Components

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > Customer

Interest for Relay Module: > 09-06-03-004D > Page 24

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

This condition may be caused by a buildup of nonconductive insulating oxidized debris known as fretting corrosion, occurring between two electricalcontact surfaces of the connection or connector. This may be caused by any of the following conditions:

The following is only a representative list of control modules and components that may be affected by this connection or connector condition and include every possible module or component for every vehicle. DOESNOT

- Blower Control Module

- Body Control Module (BCM)

- Communication Interface Module (CIM)

- Cooling Fan Control Module

- Electronic Brake Control Module (EBCM)

- Electronic Brake and Traction Control Module (EBTCM)

- Electronic Suspension Control (ESC) Module

- Engine Control Module (ECM)

- Heating, Ventilation and Air Conditioning (HVAC) Control Module

- HVAC Actuator

- Inflatable Restraint Sensing and Diagnostic Module (SDM)

- Any AIR BAG module

- Seatbelt Lap Anchor Pretensioner

- Seatbelt Retractor Pretensioner

- An SIR system connection or connector condition resulting in the following DTCs being set: B0015, B0016, B0019, B0020, B0022, or B0023

- Powertrain Control Module (PCM)

- Remote Control Door Lock Receiver (RCDLR)

- Transmission Control Module (TCM)

Correction

replace the control module, wiring or component for the following conditions: ImportantDO NOT

-

be duplicated. The condition is intermittent and cannot

-

be duplicated. The condition is present and by disconnecting and reconnecting the connector the condition can no longer

Use the following procedure to correct the conditions listed above.

1. Install a scan tool and perform the Diagnostic System Check - Vehicle. Retrieve and record any existing history or current DTCs from all of the
control modules (refer to SI).

If any DTC(s) are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle to identify the connector(s) of the control module/component

which may be causing the condition (refer to SI).

If DTCs are not set, refer to Symptoms - Vehicle to identify the connector(s) of the control module/component which may be causing the

condition (refer to SI).

2. When identified, use the appropriate DTC Diagnostics, Symptoms, Schematics, Component Connector End Views and Component Locator
documents to locate and disconnect the affected harness connector(s) which are causing the condition.

ImportantDO NOT

apply an excessive amount of dielectric lubricant to the connectors as shown, as hydrolock may result when attempting to mate theconnectors. Use ONLY a clean nylon brush that is dedicated to the repair of the conditions in this bulletin.

3. With a one-inch nylon bristle brush, apply dielectric lubricant to both the module/component side and the harness side of the affected connector(s).

4. Reconnect the affected connector(s) and wipe away any excess lubricant that may be present. 5. Attempt to duplicate the condition by using the following information:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > Customer

Interest for Relay Module: > 09-06-03-004D > Page 25

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

Note

Fretting corrosion looks like little dark smudges on electrical terminals and appear where the actual electrical contact is being made. In less severecases it may be unable to be seen or identified without the use of a magnifying glass.

- DTC Diagnostic Procedure

- Circuit/System Description

- Conditions for Running the DTC

- Conditions for Setting the DTC

- Diagnostic Aids

- Circuit/System Verification

If the condition cannot be duplicated, the repair is complete. If the condition can be duplicated, then follow the appropriate DTC, Symptom or Circuit/System Testing procedure (refer to SI).

Repair Order Documentation

be documented on the repair order. Failure to do so may result in a chargeback.ImportantThe following information MUST

- Customer vehicle condition.

- Was a Service Lamp or Service Message illuminated? If yes, specify which Service Lamp or Service Message.

- Was a DTC(s) set? If yes, specify which DTC(s) were set.

- After following the procedure contained within this bulletin, could the condition be duplicated?

If the condition duplicated, then document the affected module/component connector name and number on the repair order. was not

-

was

If the condition duplicated after the procedure contained within this bulletin was followed, and additional diagnosis led to the replacement ofa module or component, the SI Document ID Number be written on the repair order. MUST

Parts Information

Alternate Distributor For All of North America
Note

NyoGel(R) 760G Lubricant* is equivalent to GMSPO P/N 12377900, and P/N 10953529 (Canada), specified for use to correct the condition in thisbulletin.

*We believe this source and their products to be reliable. There may be additional manufacturers of such products/materials. General Motors does notendorse, indicate any preference for, or assume any responsibility for the products or material from this firm or for any such items that may be availablefrom other sources.

Warranty Information (excluding Saab Models)

For vehicles repaired under warranty, use the appropriate/closest labor operation depending upon the module/component connection that the dielectriclubricant was applied to:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > Customer

Interest for Relay Module: > 09-06-03-004D > Page 26

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

Warranty Information (Saab Models)

For vehicles repaired under warranty, use the appropriate/closest labor operation depending upon the module/component connection that the dielectriclubricant was applied to refer to the table above.

Disclaimer

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Relay Module: > 09-06-03-

004D

Relay Module: All Technical Service BulletinsElectrical - MIL ON/DTC's Set By Various Control Modules
TECHNICAL

09-06-03-004DBulletin No.:

December 08, 2010Date:

Subject:

Intermittent No Crank/No Start, No Module Communication, MIL, Warning Lights, Vehicle Messages or DTCs Set by Various ControlModules - Diagnosing and Repairing Fretting Corrosion (Disconnect Affected Connector and Apply Dielectric Lubricant)

Models:

2011 and Prior GM Passenger Cars and Trucks

Attention:

This repair can be applied to ANY electrical connection including, but not limited to: lighting, body electrical, in-line connections, powertrain controlsensors, etc. DO NOT over apply lubricant to the point where it prevents the full engagement of sealed connectors. A light coating on the terminalsurfaces is sufficient to correct the condition.

Supercede:This bulletin is being revised to update the Attention statement and add the 2011 model year. Please discard Corporate Bulletin Number 09-06-03-004C(Section 06 - Engine/Propulsion System).

Condition

Some customers may comment on any of the following conditions:

- An intermittent no crank/no start

- Intermittent malfunction indicator lamp (MIL) illumination

- Intermittent service lamp illumination

- Intermittent service message(s) being displayed

The technician may determine that he is unable to duplicate the intermittent condition.

Cause

- Vibration

- Thermal cycling

- Poor connection/terminal retention

- Micro motion

- A connector, component or wiring harness not properly secured resulting in movement

On low current signal circuits this condition may cause high resistance, resulting in intermittent connections.
On high current power circuits this condition may cause permanent increases in the resistance and may cause a device to become inoperative.

Representative List of Control Modules and Components

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Technical

Service Bulletins for Relay Module: > 09-06-03-004D > Page 29

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

This condition may be caused by a buildup of nonconductive insulating oxidized debris known as fretting corrosion, occurring between two electricalcontact surfaces of the connection or connector. This may be caused by any of the following conditions:

The following is only a representative list of control modules and components that may be affected by this connection or connector condition and include every possible module or component for every vehicle. DOESNOT

- Blower Control Module

- Body Control Module (BCM)

- Communication Interface Module (CIM)

- Cooling Fan Control Module

- Electronic Brake Control Module (EBCM)

- Electronic Brake and Traction Control Module (EBTCM)

- Electronic Suspension Control (ESC) Module

- Engine Control Module (ECM)

- Heating, Ventilation and Air Conditioning (HVAC) Control Module

- HVAC Actuator

- Inflatable Restraint Sensing and Diagnostic Module (SDM)

- Any AIR BAG module

- Seatbelt Lap Anchor Pretensioner

- Seatbelt Retractor Pretensioner

- An SIR system connection or connector condition resulting in the following DTCs being set: B0015, B0016, B0019, B0020, B0022, or B0023

- Powertrain Control Module (PCM)

- Remote Control Door Lock Receiver (RCDLR)

- Transmission Control Module (TCM)

Correction

replace the control module, wiring or component for the following conditions: ImportantDO NOT

-

be duplicated. The condition is intermittent and cannot

-

be duplicated. The condition is present and by disconnecting and reconnecting the connector the condition can no longer

Use the following procedure to correct the conditions listed above.

1. Install a scan tool and perform the Diagnostic System Check - Vehicle. Retrieve and record any existing history or current DTCs from all of the
control modules (refer to SI).

If any DTC(s) are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle to identify the connector(s) of the control module/component

which may be causing the condition (refer to SI).

If DTCs are not set, refer to Symptoms - Vehicle to identify the connector(s) of the control module/component which may be causing the

condition (refer to SI).

2. When identified, use the appropriate DTC Diagnostics, Symptoms, Schematics, Component Connector End Views and Component Locator
documents to locate and disconnect the affected harness connector(s) which are causing the condition.

ImportantDO NOT

apply an excessive amount of dielectric lubricant to the connectors as shown, as hydrolock may result when attempting to mate theconnectors. Use ONLY a clean nylon brush that is dedicated to the repair of the conditions in this bulletin.

3. With a one-inch nylon bristle brush, apply dielectric lubricant to both the module/component side and the harness side of the affected connector(s).

4. Reconnect the affected connector(s) and wipe away any excess lubricant that may be present. 5. Attempt to duplicate the condition by using the following information:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Technical

Service Bulletins for Relay Module: > 09-06-03-004D > Page 30

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

Note

Fretting corrosion looks like little dark smudges on electrical terminals and appear where the actual electrical contact is being made. In less severecases it may be unable to be seen or identified without the use of a magnifying glass.

- DTC Diagnostic Procedure

- Circuit/System Description

- Conditions for Running the DTC

- Conditions for Setting the DTC

- Diagnostic Aids

- Circuit/System Verification

If the condition cannot be duplicated, the repair is complete. If the condition can be duplicated, then follow the appropriate DTC, Symptom or Circuit/System Testing procedure (refer to SI).

Repair Order Documentation

be documented on the repair order. Failure to do so may result in a chargeback.ImportantThe following information MUST

- Customer vehicle condition.

- Was a Service Lamp or Service Message illuminated? If yes, specify which Service Lamp or Service Message.

- Was a DTC(s) set? If yes, specify which DTC(s) were set.

- After following the procedure contained within this bulletin, could the condition be duplicated?

If the condition duplicated, then document the affected module/component connector name and number on the repair order. was not

-

was

If the condition duplicated after the procedure contained within this bulletin was followed, and additional diagnosis led to the replacement ofa module or component, the SI Document ID Number be written on the repair order. MUST

Parts Information

Alternate Distributor For All of North America
Note

NyoGel(R) 760G Lubricant* is equivalent to GMSPO P/N 12377900, and P/N 10953529 (Canada), specified for use to correct the condition in thisbulletin.

*We believe this source and their products to be reliable. There may be additional manufacturers of such products/materials. General Motors does notendorse, indicate any preference for, or assume any responsibility for the products or material from this firm or for any such items that may be availablefrom other sources.

Warranty Information (excluding Saab Models)

For vehicles repaired under warranty, use the appropriate/closest labor operation depending upon the module/component connection that the dielectriclubricant was applied to:

> Relays and Modules > Relays and Modules - Accessories and Optional Equipment > Relay Module > Component Information > Technical Service Bulletins > All Technical

Service Bulletins for Relay Module: > 09-06-03-004D > Page 31

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

Warranty Information (Saab Models)

For vehicles repaired under warranty, use the appropriate/closest labor operation depending upon the module/component connection that the dielectriclubricant was applied to refer to the table above.

Disclaimer

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Module > Component Information > Description and Operation

Keyless Entry Module: Description and Operation

Module Mounting And Wiring (Typical)

The Remote Keyless Entry Module (receiver) is located in the luggage compartment on the left inner wheel house panel. The following information is onthe module:

^ BCM Part Number
^ Latest Change Level
^ Julian Date Code (4 digits)
^ Manufacturing Location

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Module > Component Information > Service and Repair > Reprogramming Transmitter/Module

Keyless Entry Module: Service and RepairReprogramming Transmitter/Module

Module Mounting And Wiring (Typical)

All Remote Keyless Entry Modules (receivers) may be programmed to receive four different transmitters which all may be used to operate the remotecontrol lock system on the vehicle. Also, several vehicles, each with the same system may all be programmed to operate from the same transmitter orfour different transmitters.

During the programming of the Remote Keyless Entry Module, feedback is provided by the receiver by cycling the door locks. To program a RemoteKeyless Entry Module (receiver):

1. Turn ignition off.2. Ground the program pin.
^

Within , Lock, Unlock and Trunk will cycle to indicate module ready for programming.1 second

3. Press and hold the Lock and Unlock buttons until:
^ Lock, Unlock, Trunk, and Horn cycles to indicate the transmitter has successfully been programmed.
^

No more than .12 seconds

4. Repeat step 3 for the remaining transmitters.5. Remove the ground from the program pin.6. Verify proper operation of the transmitters.

Do not leave the door lock key (oval head) in the vehicle while programming the Remote Keyless entry Module. This will avoid unintentional lock out ifthe programming procedure is not properly performed.

All vehicles with the Remote Keyless Entry option will have the Remote Keyless End Module "matched" to the transmitter at the assembly plant. Theabove procedure is used by service to replace lost transmitters or to program a second transmitter.

> Relays and Modules > Relays and Modules - Body and Frame > Keyless Entry Module > Component Information > Service and Repair > Reprogramming Transmitter/Module > Page 38

Keyless Entry Module: Service and RepairKeyless Entry Module

Module Mounting And Wiring (Typical)

REMOVE OR DISCONNECT

1. Negative battery cable.2. Open rear compartment.3. Left inner trim panel.4. One electrical connector.5. Remove push pins.6. Module.

INSTALL OR CONNECT

1. Module to rear compartment brace.2. Push pins to brace.3. Electrical connector.4. Rear compartment trim.5. Close rear compartment.6. Negative battery cable.7. Program to match transmitter(s).

> Relays and Modules > Relays and Modules - Body and Frame > Power Door Lock Relay > Component Information > Locations

LH I/P

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Locations > Electronic Brake Control Relay

LH Rear Of Engine Compartment

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Locations > Electronic Brake Control Relay > Page 47

Front Impact Bar

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Diagrams > Isolation Relay

Isolation Relay

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Diagrams > Isolation Relay > Page 50

Electronic Brake Control Relay

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Diagrams > Page 51

ABS Main Relay: Description and Operation

The Electronic Brake Control Relay is a normally-open contact type, and has special contact material to handle the high currents required for ABS VIoperation. The relay allows the battery voltage and current to be supplied to the EBCM, which supplies power to the motors and solenoids.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > ABS Main Relay > Component Information > Diagrams > Page 52

ABS Main Relay: Service and Repair

REMOVE OR DISCONNECT

1. Nut attaching Electronic Brake Control Relay.2. Electronic Brake Control Relay.

INSTALL OR CONNECT

1. Electronic Brake Control Relay.2. Nut attaching Electronic Brake Control Relay. Tighten Nut to 10 Nm (89 inch lbs.).

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > Customer Interest for Electronic Brake Control Module:

> 73-50-26

Electronic Brake Control Module: Customer InterestBrakes - ABS Light ON, DTC 46 & 86 (C1246 & C1286)

File In Section: 5 - Brakes
Bulletin No.: 73-50-26
Date: August, 1997

Subject: ABS Light On - DTC's 46 and 86 Set(Perform Diagnostic Procedure, Replace Center ABS Motor Pinion)

Models: 1991-97 Buick Skylark1992-97 Buick Regal1994-97 Buick Century1992-96 Chevrolet Beretta, Corsica, Lumina APV1992-97 Chevrolet Cavalier, Lumina,1993-97 Chevrolet Camaro1995-97 Chevrolet Monte Carlo1997

Chevrolet Malibu, Venture

1993-97 Geo Prizm1995-97 Geo Metro1996-97 Geo Tracker1991

Oldsmobile Calais

1992-96 Oldsmobile Cutlass Ciera1992-97 Oldsmobile Achieva, Cutlass Supreme, Silhouette1997

Oldsmobile Cutlass

1998 Oldsmobile Intrigue

1991-97 Pontiac Grand Am1992-94 Pontiac Sunbird1992-97 Pontiac Grand Prix, Trans Sport1993-97 Pontiac Firebird, Trans Am1995-97 Pontiac Sunfire
Condition

Some owners may comment that the ABS light is on with Diagnostic Trouble Codes (DTC's) 46 and 86 set (rear ABS channel will not move) as currentor history. (DTC's 46 and 86 will be displayed as C1246 and C1286 on 1997 and 1998 model year vehicles).
Cause

A condition exists where the ABS motor pack gear (pinion) will bind on the motor armature shaft causing the motor not to move when commanded bythe EBCM. This condition is aggravated by light corrosion between the pinion and shaft. Therefore, it may occur more frequently when the weather ishot and humid.

Important:

Other EBCM and ABS motor pack concerns can also cause this condition, but they are not as common as the above cause.

Correction

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins >

Customer Interest for Electronic Brake Control Module: > 73-50-26 > Page 58

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins >

Customer Interest for Electronic Brake Control Module: > 73-50-26 > Page 59

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

Follow the included procedure (Attachments 1 and 2) for diagnosis. This condition may correct itself before the owner is able to bring the vehicle in forservice. Therefore, if DTC 46 is set in history, and is not currently setting, the included procedure will instruct you to replace the center ABS motorpinion. The new pinion has a Teflon insert which reduces friction between the pinion and motor armature shaft.
Pinion Replacement

If the included procedure instructs you to replace the center ABS motor pinion, use P/N 18029776. Please note that the new pinion is a directreplacement part which requires no modifications to the motor shaft. Follow the pinion replacement procedure included with the new pinion. Completemotor pack replacement is not required.
Parts Information

Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation Labor Time

H2506 Use published labor

operation time.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All Technical Service Bulletins for Electronic Brake

Control Module: > 73-50-26

Electronic Brake Control Module: All Technical Service BulletinsBrakes - ABS Light ON, DTC 46 & 86 (C1246 & C1286)

File In Section: 5 - Brakes
Bulletin No.: 73-50-26
Date: August, 1997

Subject: ABS Light On - DTC's 46 and 86 Set(Perform Diagnostic Procedure, Replace Center ABS Motor Pinion)

Models: 1991-97 Buick Skylark1992-97 Buick Regal1994-97 Buick Century1992-96 Chevrolet Beretta, Corsica, Lumina APV1992-97 Chevrolet Cavalier, Lumina,1993-97 Chevrolet Camaro1995-97 Chevrolet Monte Carlo1997

Chevrolet Malibu, Venture

1993-97 Geo Prizm1995-97 Geo Metro1996-97 Geo Tracker1991

Oldsmobile Calais

1992-96 Oldsmobile Cutlass Ciera1992-97 Oldsmobile Achieva, Cutlass Supreme, Silhouette1997

Oldsmobile Cutlass

1998 Oldsmobile Intrigue

1991-97 Pontiac Grand Am1992-94 Pontiac Sunbird1992-97 Pontiac Grand Prix, Trans Sport1993-97 Pontiac Firebird, Trans Am1995-97 Pontiac Sunfire
Condition

Some owners may comment that the ABS light is on with Diagnostic Trouble Codes (DTC's) 46 and 86 set (rear ABS channel will not move) as currentor history. (DTC's 46 and 86 will be displayed as C1246 and C1286 on 1997 and 1998 model year vehicles).
Cause

A condition exists where the ABS motor pack gear (pinion) will bind on the motor armature shaft causing the motor not to move when commanded bythe EBCM. This condition is aggravated by light corrosion between the pinion and shaft. Therefore, it may occur more frequently when the weather ishot and humid.

Important:

Other EBCM and ABS motor pack concerns can also cause this condition, but they are not as common as the above cause.

Correction

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All

Technical Service Bulletins for Electronic Brake Control Module: > 73-50-26 > Page 62

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > All

Technical Service Bulletins for Electronic Brake Control Module: > 73-50-26 > Page 63

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

Follow the included procedure (Attachments 1 and 2) for diagnosis. This condition may correct itself before the owner is able to bring the vehicle in forservice. Therefore, if DTC 46 is set in history, and is not currently setting, the included procedure will instruct you to replace the center ABS motorpinion. The new pinion has a Teflon insert which reduces friction between the pinion and motor armature shaft.
Pinion Replacement

If the included procedure instructs you to replace the center ABS motor pinion, use P/N 18029776. Please note that the new pinion is a directreplacement part which requires no modifications to the motor shaft. Follow the pinion replacement procedure included with the new pinion. Completemotor pack replacement is not required.
Parts Information

Parts are currently available from GMSPO.
Warranty Information
For vehicles repaired under warranty, use:
Labor Operation Labor Time

H2506 Use published labor

operation time.

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > Page 64

Electronic Brake Control Module: Specifications

Mounting Screws ..................................................................................................................................................................................... 2 Nm (17 inch lbs.)

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Technical Service Bulletins > Page 65

RH Rear Of Engine Compartment

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > Control Module Connector

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > Control Module Connector > Page 68

Electronic Brake Control Module: DiagramsBrake Control Module

Electronic Brake Control Module

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > Control Module

Connector > Page 69

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

Electronic Brake Control Module (Part 1 Of 2)

Electronic Brake Control Module (Part 2 Of 2)

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > Page 70

Electronic Brake Control Module: Description and Operation
DESCRIPTION

EBCM

The controlling element of ABS VI is a microprocessor based Electronic Brake Control Module (). Inputs to the system include four wheelspeed sensors, the brake switch, the brake fluid level switch, ignition switch, and unswitched battery voltage. Outputs include three bi-directionalmotor controls, two solenoid controls and the Electronic Brake Control Relay. A serial data line is used for service diagnostic tools (Scan Tool),assembly plant testing and control of indicator lamps in the IPC.

OPERATION

(PCM)

The EBCM monitors the speed of each wheel. If any wheel begins to approach lock-up, the EBCM controls the motors and solenoids to reduce brakepressure to the wheel approaching lock-up. Once the wheel regains traction, brake pressure is increased until the wheel again begins to approachlock-up. This cycle repeats until either the vehicle comes to a stop, the brake is released, or no wheels approach lock-up. With ETS, the EBCMmonitors the wheel spin slip through the front wheel speed sensors. If either of the front wheels begins to slip, the EBCM determines the desired wheeltorque needed to minimize front wheel spin. This information is sent to the Powertrain Control Module via the serial data link. The PCM thencalculates a spark retard value to achieve the requested torque and upshifts the transmission if needed. Additionally, the EBCM monitors itself, eachinput and each output for proper operation. If any system malfunction is detected, the EBCM will store a DTC in nonvolatile memory (DTCs will notdisappear if the battery is disconnected).

> Relays and Modules > Relays and Modules - Brakes and Traction Control > Electronic Brake Control Module > Component Information > Diagrams > Page 71

Electronic Brake Control Module: Service and Repair

REMOVE OR DISCONNECT

1. Engine harness connector from EBCM.2. Hex head screws attaching EBCM to cowl panel.3. EBCM from cowl panel. Inspect and Ensure all 3 plastic grommets are properly located.

INSTALL OR CONNECT

2 Nm (17 inch lbs.).

1. EBCM to cowl panel, aligning screw holes.2. Hex head screws, attaching EBCM. Tighten Hex head screws to 3. EBCM electrical connector.

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations

RH Rear Of Engine Compartment

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Page 76

Coolant Fan Relay

> Relays and Modules > Relays and Modules - Cooling System > Radiator Cooling Fan Motor Relay > Component Information > Locations > Page 77

Radiator Cooling Fan Motor Relay: Description and Operation

OPERATION

The PCM regulates voltage to the coolant fan relays, which operate the fans.

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications

Cruise Control Module: Specifications

Module assembly to mounting bracket nuts ............................................................................................................................................. 10 N.m (89 lb. in.)Module assembly to front of dash nuts .................................................................................................................................................... 10 N.m (89 lb. in.)

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications > Page 82

Front Of Dash

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications > Page 83

Cruise Control Module

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications > Page 84

Cruise Control Module: Service and Repair

(FOD)

The cruise control module assembly is mounted on the "front of dash" . The module assembly has an electronic controller and an electric steppermotor to vary the throttle with each different cruise control mode. The module assembly is not serviceable.

Cruise Control Module To Bracket

Cruise Control Module Mounting

Remove or Disconnect

1. Negative battery cable.2. Cruise control cable from module assembly. 3. Electrical connector from module assembly.4. One nut from mounting stud and two screws.5. Module assembly from front of dash.6. Module assembly from mounting bracket.

> Relays and Modules > Relays and Modules - Cruise Control > Cruise Control Module > Component Information > Specifications > Page 85

Skylark L4-144 2.4L DOHC VIN T SFI (1997)

1. Module assembly to mounting bracket.Install or Connect

^Important

Do not pre-tap screws to module without mounting bracket in between the module and the screw. The added length of the screw maydamage the cruise control module.

^Tighten

Nuts to .10 N.m (89 lb. in.)

2. Module assembly to front of dash.3. One nut and two screws.

^Tighten

Nuts to .10 N.m (89 lb. in.)

4. Electrical connector to module.5. Cruise control cable to module assembly. 6. Adjust cruise control cable. 7. Negative battery cable.

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations

RH Rear Of Engine Compartment

> Relays and Modules > Relays and Modules - HVAC > Blower Motor Relay > Component Information > Locations > Page 90

Blower Motor Relay

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations

RH Rear Of Engine Compartment

> Relays and Modules > Relays and Modules - HVAC > Compressor Clutch Relay > Component Information > Locations > Page 94

A/C Compressor Clutch Relay